1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.webcache;
24  
25  import com.liferay.portal.kernel.cache.PortalCache;
26  import com.liferay.portal.kernel.cache.SingleVMPool;
27  import com.liferay.portal.kernel.log.Log;
28  import com.liferay.portal.kernel.log.LogFactoryUtil;
29  import com.liferay.portal.kernel.util.Time;
30  import com.liferay.portal.kernel.webcache.WebCacheException;
31  import com.liferay.portal.kernel.webcache.WebCacheItem;
32  import com.liferay.portal.kernel.webcache.WebCachePool;
33  
34  /**
35   * <a href="WebCachePoolImpl.java.html"><b><i>View Source</i></b></a>
36   *
37   * @author Brian Wing Shun Chan
38   */
39  public class WebCachePoolImpl implements WebCachePool {
40  
41      public static final String CACHE_NAME = WebCachePool.class.getName();
42  
43      public void afterPropertiesSet() {
44          _cache = _singleVMPool.getCache(CACHE_NAME);
45      }
46  
47      public void clear() {
48          _cache.removeAll();
49      }
50  
51      public Object get(String key, WebCacheItem wci) {
52          Object obj = _singleVMPool.get(_cache, key);
53  
54          if (obj == null) {
55              try {
56                  obj = wci.convert(key);
57  
58                  int timeToLive = (int)(wci.getRefreshTime() / Time.SECOND);
59  
60                  _cache.put(key, obj, timeToLive);
61              }
62              catch (WebCacheException wce) {
63                  if (_log.isWarnEnabled()) {
64                      Throwable cause = wce.getCause();
65  
66                      if (cause != null) {
67                          _log.warn(cause, cause);
68                      }
69                      else {
70                          _log.warn(wce, wce);
71                      }
72                  }
73              }
74          }
75  
76          return obj;
77      }
78  
79      public void remove(String key) {
80          _singleVMPool.remove(_cache, key);
81      }
82  
83      public void setSingleVMPool(SingleVMPool singleVMPool) {
84          _singleVMPool = singleVMPool;
85      }
86  
87      private static Log _log = LogFactoryUtil.getLog(WebCachePoolImpl.class);
88  
89      private SingleVMPool _singleVMPool;
90      private PortalCache _cache;
91  
92  }